. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 68 DEPARTMENT OF FISH AND GAME. A major accomplishment during the biennium was the development of a very promising tuna tag. The tag is made of plastic tubing. Top, applying the tag. Bottom, the tag in place. PACIFIC MACKEREL The catch of Pacific mackerel (Pneumatophorus diego) dropped, dur- ing the biennium, to the lowest level in 19 years. Age work on the Pacific mackerel was completed for the 12-season period 1939-40 through 1950-5
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 68 DEPARTMENT OF FISH AND GAME. A major accomplishment during the biennium was the development of a very promising tuna tag. The tag is made of plastic tubing. Top, applying the tag. Bottom, the tag in place. PACIFIC MACKEREL The catch of Pacific mackerel (Pneumatophorus diego) dropped, dur- ing the biennium, to the lowest level in 19 years. Age work on the Pacific mackerel was completed for the 12-season period 1939-40 through 1950-51 and the results of this study were pub- lished (Fish Bulletin 83). This study showed that old fish comprising reserve spawning stock are so reduced in numbers that the present-day fishery, in order to maintain itself, depends upon each year's hatch. As. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original California. Dept. of Fish and Game; California. Fish and Game Commission; California. Division of Fish and Game. [San Francisco, etc. ] State of California, Resources Agency, Dept. of Fish and Game
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